METHOD OF MEASURING ION CONCENTRATION Russian patent published in 2005 - IPC

FIELD: measurement technology.

SUBSTANCE: method of measuring ion concentration is based upon storage of charge in capacity of aspiration chamber while ions of tested gas deposit onto its collecting electrode during specified period of time. After it the charge is measured by means of registration of voltage pulse emerging at output of input device when capacitance of aspiration chamber discharges after charge-discharge cycle. Then the second cycle is performed at which moment of discharge of capacitance of aspiration chamber lags moment of discharge during first cycle being equal to period of signal introducing error into measurement of ion concentration. Ion concentration is found by means of combined processing of voltage pulses emerging at discharges of aspiration chamber due to subtraction of voltage pulses during first and second discharges.

EFFECT: improved precision of measurement.

2 dwg